MULTI-LAYER TRANSPARENT LIGHT-WEIGHT SAFETY GLAZINGS

• US 20150202845A1
• Filed: 08/01/2013
• Published: 07/23/2015
• Est. Priority Date: 08/03/2012
• Status: Abandoned Application

• Current Assignee: Corning Incorporated
• Original Assignee: Corning Incorporated
• Inventors: Cherekdjian, Sarko, Sorensen, Charles Mitchel Jr.
• Application Number:
  US14/418,982
• Publication Number:
  US 20150202845A1
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: B32B 17/10045 with at least one intermediate layer consisting of a glass sheet
• CPC Class Codes: B32B 17/10137 Chemical strengthening
• CPC Class Codes: B32B 17/10743 containing acrylate (co)polymers or salts thereof
• CPC Class Codes: B32B 17/10761 containing vinyl acetal
• CPC Class Codes: B32B 17/1077 containing polyurethane
• CPC Class Codes: B32B 17/10788 containing ethylene vinylacetate
• CPC Class Codes: B32B 2250/42 Alternating layers, e.g. ABAB(C), AABBAABB(C)
• CPC Class Codes: B32B 2369/00 Polycarbonates
• CPC Class Codes: B32B 2571/02 defensive, e.g. armour plates or anti-ballistic clothing
• CPC Class Codes: F41H 5/0407 Transparent bullet-proof laminatesinformative reference: layered products essentially comprising glass in general B32B17/06, e.g. B32B17/10009; manufacture or composition of glass, e.g. joining glass to glass C03; permanent multiple-glazing windows, e.g. with spacing therebetween, E06B3/66
• CPC Class Codes: Y10T 428/24967 Absolute thicknesses specified
• CPC Class Codes: Y10T 428/31507 Of polycarbonate
• CPC Class Codes: Y10T 428/31573 Next to addition polymer of ethylenically unsaturated monomer
• CPC Class Codes: Y10T 428/31601 Quartz or glass
• CPC Class Codes: Y10T 428/3163 Next to acetal of polymerized unsaturated alcohol [e.g., formal butyral, etc.]

Abstract

A multi-layer glass structure is provided having n layers of annealed or chemically strengthened glass and n−1 layers of a polymer interlayer where n is a positive integer greater than 2. In another embodiment, a glass laminate structure is provided having a plurality of annealed or chemically strengthened glass sheets, one or more polymeric interlayers positioned between adjacent annealed or chemically strengthened glass sheets, and a thin annealed or chemically strengthened glass sheet on a first side of the glass laminate structure.

Claims

1. A laminate structure comprising:

(a) a plurality of glass layers; and

(b) at least one polymer interlayer intermediate adjacent glass layers,

wherein each of the plural glass layers comprise thin, chemically strengthened or annealed glass.

2. The laminate structure of claim 1 further comprising a polycarbonate layer on a first side of the laminate structure.

3. The laminate structure of claim 2 further comprising a thin chemically strengthened glass layer on a second side of the laminate structure, the second side opposing the first side.

4. The laminate structure of claim 1 further comprising a thin chemically strengthened glass layer on a first side of the laminate structure.

5. The laminate structure of claim 1 wherein the polymer interlayer comprises a material selected from the group consisting of poly vinyl butyral (PVB), polycarbonate, acoustic PVB, ethylene vinyl acetate (EVA), thermoplastic polyurethane (TPU), ionomer, a thermoplastic material, and combinations thereof.

6. The laminate structure of claim 1 wherein each of the plural glass layers have a thickness selected from the group consisting of a thickness not exceeding 1.5 mm, a thickness not exceeding 1.0 mm, a thickness not exceeding 0.7 mm, a thickness not exceeding 0.5 mm, a thickness within a range from about 0.5 mm to about 1.0 mm, a thickness from about 0.5 mm to about 0.7 mm.

7. The laminate structure of claim 1 wherein the thicknesses of two adjacent glass layers are different.

8. The laminate structure of claim 1 wherein the composition of two adjacent glass layers are different.

9. The laminate structure of claim 1 further comprising at least twenty glass layers and nineteen polymer interlayers intermediate adjacent glass layers.

10. The laminate structure of claim 1 wherein a portion of the structure becomes optically opaque upon impact.

11. A glass laminate structure comprising:

(a) a plurality of chemically strengthened or annealed glass sheets;

(b) one or more polymeric interlayers positioned between adjacent chemically strengthened or annealed glass sheets; and

(c) a thin chemically strengthened glass sheet on a first side of the glass laminate structure.

12. The glass laminate structure of claim 11 further comprising a polycarbonate layer on a second side of the glass laminate structure, the second side opposing the first side.

13. The glass laminate structure of claim 11 wherein the polymeric interlayer comprises a material selected from the group consisting of poly vinyl butyral (PVB), polycarbonate, acoustic PVB, ethylene vinyl acetate (EVA), thermoplastic polyurethane (TPU), ionomer, a thermoplastic material, and combinations thereof.

14. The glass laminate structure of claim 11 wherein each of the plural glass sheets have a thickness selected from the group consisting of a thickness not exceeding 1.5 mm, a thickness not exceeding 1.0 mm, a thickness not exceeding 0.7 mm, a thickness not exceeding 0.5 mm, a thickness within a range from about 0.5 mm to about 1.0 mm, a thickness from about 0.5 mm to about 0.7 mm.

15. The glass laminate structure of claim 11 wherein the thicknesses of two adjacent glass sheets are different.

16. The glass laminate structure of claim 11 wherein the composition of two adjacent glass sheets are different.

17. The glass laminate structure of claim 11 further comprising at least twenty chemically strengthened or annealed glass sheets and nineteen polymeric interlayers positioned between adjacent chemically strengthened or annealed glass sheets.

18. The glass laminate structure of claim 11 wherein a portion of the structure becomes optically opaque upon impact.

19. A multi-layer glass structure comprising:

(a) n layers of chemically strengthened or annealed glass; and

(b) n−

1 layers of a polymer interlayer,

wherein n is a positive integer greater than 2.

20. The multi-layer glass structure of claim 19 wherein n is selected from the group consisting of 5, 10, 15, 20.

21. The multi-layer glass structure of claim 19 further comprising a polycarbonate layer on a first side of the multi-layer structure.

22. The multi-layer glass structure of claim 21 further comprising a thin chemically strengthened glass layer on a second side of the multi-layer structure, the second side opposing the first side.

23. The multi-layer glass structure of claim 19 further comprising a thin chemically strengthened glass layer on a first side of the multi-layer structure.

24. The multi-layer glass structure of claim 19 wherein the polymer interlayer comprises a material selected from the group consisting of poly vinyl butyral (PVB), polycarbonate, acoustic PVB, ethylene vinyl acetate (EVA), thermoplastic polyurethane (TPU), ionomer, a thermoplastic material, and combinations thereof.

25. The multi-layer glass structure of claim 19 wherein each of the n layers of chemically strengthened or annealed glass have a thickness selected from the group consisting of a thickness not exceeding 1.5 mm, a thickness not exceeding 1.0 mm, a thickness not exceeding 0.7 mm, a thickness not exceeding 0.5 mm, a thickness within a range from about 0.5 mm to about 1.0 mm, a thickness from about 0.5 mm to about 0.7 mm.

26. The multi-layer glass structure of claim 19 wherein the thicknesses of two adjacent glass layers are different.

27. The multi-layer glass structure of claim 19 wherein the composition of two adjacent glass layers are different.

28. The multi-layer glass structure of claim 19 wherein a portion of the structure becomes optically opaque upon impact.